package com.wocai.jrt.orgadmin.utils;

import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;

import com.vteba.utils.common.PropsUtils;

public class EmailUtils {
	public static final String MAIL_HOST = "mail.smtp.host";
	public static final String MAIL_USERNAME = "mail.sender.username";
	public static final String MAIL_PASSWORD = "mail.sender.password";

	private MimeMessage message;
	private Session session;
	private Transport transport;

	private String mailHost = "";
	private String sender_username = "";
	private String sender_password = "";

	private Properties properties = new Properties();

	/*
	 * 初始化方法
	 */
	public EmailUtils(boolean debug) {
		this.mailHost = PropsUtils.get(MAIL_HOST);
		this.sender_username = PropsUtils.get(MAIL_USERNAME);
		this.sender_password = PropsUtils.get(MAIL_PASSWORD);

		session = Session.getInstance(properties);
		session.setDebug(debug);// 开启后有调试信息
		message = new MimeMessage(session);
	}

	/**
	 * 发送邮件
	 * 
	 * @param subject
	 *            邮件主题
	 * @param sendHtml
	 *            邮件内容
	 * @param receiveUser
	 *            收件人地址
	 * @param attachment
	 *            附件
	 */
	public void doSendHtmlEmail(String subject, String sendHtml, String receiveUser,
			List<File> attachments) {
		try {
			// 发件人
			InternetAddress from = new InternetAddress(sender_username);
			message.setFrom(from);

			// 收件人
			InternetAddress to = new InternetAddress(receiveUser);
			message.setRecipient(Message.RecipientType.TO, to);

			// 邮件主题
			message.setSubject(subject);

			// 向multipart对象中添加邮件的各个部分内容，包括文本内容和附件
			Multipart multipart = new MimeMultipart();

			// 添加邮件正文
			BodyPart contentPart = new MimeBodyPart();
			contentPart.setContent(sendHtml, "text/html;charset=UTF-8");
			multipart.addBodyPart(contentPart);

			// 添加附件的内容
			if (attachments != null) {
				for (File attachment : attachments) {
					BodyPart attachmentBodyPart = new MimeBodyPart();
					DataSource source = new FileDataSource(attachment);
					attachmentBodyPart.setDataHandler(new DataHandler(source));

					// 网上流传的解决文件名乱码的方法，其实用MimeUtility.encodeWord就可以很方便的搞定
					// 这里很重要，通过下面的Base64编码的转换可以保证你的中文附件标题名在发送时不会变成乱码
					// sun.misc.BASE64Encoder enc = new
					// sun.misc.BASE64Encoder();
					// messageBodyPart.setFileName("=?GBK?B?" +
					// enc.encode(attachment.getName().getBytes()) + "?=");

					// MimeUtility.encodeWord可以避免文件名乱码
					attachmentBodyPart.setFileName(MimeUtility.encodeWord(attachment.getName()));
					multipart.addBodyPart(attachmentBodyPart);
				}
			}

			// 将multipart对象放到message中
			message.setContent(multipart);
			// 保存邮件
			message.saveChanges();

			transport = session.getTransport("smtp");
			// smtp验证，就是你用来发邮件的邮箱用户名密码
			transport.connect(mailHost, sender_username, sender_password);
			// 发送
			transport.sendMessage(message, message.getAllRecipients());

			System.out.println("send success!");
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (transport != null) {
				try {
					transport.close();
				} catch (MessagingException e) {
					e.printStackTrace();
				}
			}
		}
	}

	public static void main(String[] args) {
		EmailUtils se = new EmailUtils(false);
		List<File> affix = new ArrayList<File>();
		affix.add(new File("D:\\Java组加班餐补报销.xlsx"));
		se.doSendHtmlEmail("邮件主题11", "邮件内容", "270978354@qq.com", affix);//
	}
}
